code: def create_kernel_with_prior(self, period_length_prior):
      return PeriodicKernel(period_length_prior=period_length_prior)
  
file_path: gpytorch/test/kernels/test_periodic_kernel.py
imports: import math
  import unittest
  import torch
  from gpytorch.kernels import PeriodicKernel
  from gpytorch.priors import NormalPrior
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 8 for calling the TestPeriodicKernel obj's underlying member method code with example usage: obj.create_kernel_with_prior(period_length_prior) and returns: PeriodicKernel